If `2sinalpha/(1+cosalpha+sinalpha)=y` then value of `(1-cosalpha+sinalpha)/(1+sinalpha)` is

If (2sinalpha)/(1+cosalpha +sinalpha)=y , then prove that (1-cosalpha+sinalpha )/(1+sinalpha) is also equal to y.

If (2sinalpha)/({1+cosalpha+sinalpha})=y , then ({1-cosalpha+sinalpha})/(1+sinalpha) =

(1-cos alpha)/(sinalpha)=tan(alpha/2)

Prove that (1-cosalpha)/sinalpha=tan(alpha/2)

If sin.alpha/2+cos.alpha/2=1.4, then: sinalpha=

If 7sinalpha=24cosalpha,0ltalphalt(pi)/(2) then the value of 14tanalpha-75cosalpha-7secalpha is equal to

A square of side a lies above the x-axis and has one vertex at the origin. The side passing through the origin makes an angle alpha(0ltalphaltpi/ 4) with the positive direction of x-axis. equation its diagonal not passing through origin is (a) y(cosalpha+sinalpha)+x(sinalpha-cosalpha)="alpha(b)y(cosalpha+sinalpha)+x(sinalpha+cosalpha)=alpha(c)y(cosalpha+sinalpha)+x(cosalpha-sinalpha)=alpha(d)y(cosalpha-sinalpha)-x(sinalpha-cosalpha)=alpha

If tantheta=(sinalpha-cosalpha)/(sinalpha+cosalpha) , then sinalpha+cosalphaandsinalpha-cosalpha are equal to